Aven Colony is a sci-fi colony-building sim - create humanity's first settlement on an extrasolar world! · By mothership, Mothership Entertainment, ellie_team17
You can. You just have to enable it. It's disabled by default.
You have to allow the farming of inedible plants in order to collect Xeno Sage. You can do that by selecting a farm where you want to allow that and clicking the checkbox up in the top right of the screen.
We hope that helps!